Apparatus for treating road-making material.



Jv. H INBS. APPARATUS FOR TREATING ROAD MAKING MATERIAL. APPLICATION FILED OTJQ, 1910.

3 SHEETS-SHEET 1.

1,049,581 v Patented Jan. 7, 1913;

vJ. BIN-ES. Y Y APPARATUS FOR TREATING ROAD MAKING MATERIAL.

APPLICATION FILED 0UT.19, 1910. 1,049,581 'Patented Jan. 7,1913.

s SHEETS-SHEET 2.v

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J. EINES. APARATUS POR-TBBATING ROAD MAKING MATERIAL.

. l y APPLIcAjqoN FILED ocT.19,191o. 1,049,581, Patented m1111913.

3 SHEETS-SHEET 3.

FIG 4Q r.APEARATTJ'S FOR' TREATING ROAD-MAKING MATERIAL.

s Applicat'ineied october 19,1916. vserial No. 587,9s2.

Specification of Lettersatent i Patented Jani?, '1?913.

' rTo all whom t may conce/m:

Be it known that I, JOHN. I-II'NS, a subkject of the Iing of- Grreaty Britain, residing at, Sedlescombe Lodge, Sedlescombe Road,

St. Leonards-on-Sea, England, yhave invent,- ed certain newand useful Improvements in' Apparatus for Treating Road-MakingjMal terial, of which the following is a, speci-Q.

As a means forpreventing Vformation f ofdust on road and like'surfa'cesithas been the practice in some 'cases to build the roady ofstone, sometimes of various grades,` which has been thoroughly coatedk with tar or like material. 'A 'tarred macadam road vis thus 'formed which is found to have considerable r endurance owing. to the y"binding nature ofi the materials used', alsoow-ingto this bind- Q ing nature the road material isnot crumbled# and broken up and `ultimately Vpowdered under heavy traliic asin the case of ordinary i 'macadam roads` andthe formation of dustl is thus very largely,`at anyrate, prevented. fk

In building such `roads yat present lthe stoneOr other material used is tarred in bulk at a works and conveyed toft'hei site of thel road to be built and" is thus `frequently exl posed rfor a considerable time and is also:

which vtends to deteriorate the dressing or Hsubject to much shaking and rough handling ,30.

Y, coating. The value of ydressinggthe stone,.

etc., at the site ofthefbuildingy of theqroad has long been realized but althoughthis has beenfrequently attempted by means of such crude arrangements as open 'firesl or` fire buckets for dryingthe stone'before coating,-

and although more than one special machine has been proposed, `there is no practical portable apparatus known capable of 'rapidly treatingythe stone, etc., either in sum-V mer -or winter. The difficulty experienced has been owing to the amount of moisture to be driven out of thestone, etc., 'before the `coating can be effectively given.

The present invention provides la very simple and easily Ahandled apparatus which is portable and' is adapted toy rapidly heatk `and vdry the stone, aswellas handle it for A :conveying it to the liquid for coating and ient for. application to the road. Y In the present invention I employ a suitg removeit therefronr-in aconditionconvenable shellcn a wheeled frame with suit`k able heating provision, preferably a Lgrate supported at the underpart ofthe shell and means for charging and discharging ythe/ma;- terial. In .the shell I arrange a series of shelves which are pivotalxor are built` ofa series of plates each of which is pivotal. f

The 4latter is4 thef preferred formk and vzeacli plate 0f eachv `shelf I lmay ,pivot by means of trunnionsat the end carried into bearings in the end plates of the shell. `By continuf ingthe trunnions at one: end through-the shelland providing them with suitable oper'- atin'g; gear I may operate'the plates ofgea'ch' shelfsimultaneously. 4kPreferably below the tiltingplates I arrange a fixed shelf which is above the grate and forms a naljhot plate from whichtheV material maybe withydrawn. by scraping on otherwise. Such a shelf-may be removable if desired so as to` bodily remove the material. In one position the pivotal plates are horizontal andi/"form Y shelves for receiving the lstone etc. with smallv spaces forming heat passages, and when operatedthe plates of each shelf may besimultaneously turned to an inclined'wor nearly vertical lposition thus discharging anyA material resting on them through the spaces ybetween`them and onto the next shelf "or onto, the final" Vheating shelf.

The plates kof they shelves maybe convenientlyf formed each of,two'angle-sectiongmembers arranged back to back and they pivots may be central-ly disposed by employingxtag like'piecesfsecured between the angle section members; n f

In -some cases it Inayfbev desirable to avr-,1`

rangethe pivot of each plate outofcenter;

the surface of the platevvthen'projects.more

0n oneyside of the pivotthan the otherxsoA that Vwhen material is resting-upon itthere will be more. weight on yone side of thepivot y than the other. If the plates yformed insthis manner are arranged yfor operation sothat the longer-surface is thefside of the plate whichhas La downwardr movement inl tilting, f

it will be seen that the weight assists the action of tilting so that the operation of tilting several plates (forming one shelf) together may be easily operated by hand. By this arrangement the pivots are not subjected to great strain during operation.

In order that the invention may be thoroughly understood and easily carried into practical effect I have appended hereunto 3 sheets of drawings illustrating my invention.

Figure 1 is a perspective view of the apparatus in the form of a road vehicle. Fig. 2, is a similar view to Fig. 1 but looking toward the other end of the machine. Fig. 8, is a larger scale view than the previous iigures and one half is shown in section. Fig. 4, is a perspective View showing the formation of one of the tilting plates and the method of providing it with a pivot. Fig. 5, is a perspective View showing a support and bearing for the center portion of a tilting plate. Fig. 6, shows the plate built up with its pivot eccentrically disposed. Figs. 7 and 8 show the plate formed in one piece.

These drawings show the preferred embodiment of the invention in which the portable apparatus is in the form of a wheeled machine or vehicle; this may be drawn by horse or tractor or may be driven by motive power and forms a very convenient machine which can readily be moved to the site o-f the work and during operations can follow up the work as it progresses so that hand conveying of the material may be dispensed with as much as possible.

As will be seen the machine comprises a suitable shell a strongly built and stayed and mounted upon wheels I) and provided with a grate c and chimney d. It is preferred to arch over the grate with firebrick as at e leaving flues for the hot gases to pass up into the interior of the shell. Above the grate in this machine are two slightly dished plates f one on each side of the longitudinal axis of the machine. The plates f, only 011e of which is seen at Fig. 3 owing to half that figure only being shown in section, form final hot plates. Flues such as g at the sides enable the gases to pass these plates where t-he gases come in contact with a shelf composed of tilting plates h. The plates 71, when in horizontal position as at Fig. 3 fit up against the side wall of the shell as at c' and atthe center of the machine reach to the side of a girder member y'. A similarly disposed set of plates are on the left hand side of the machine, Fig. 8, and the girder bordering them at the center is disposed to leave a space between it and the member 7' so that the gases may pass from the side fines g toward the center and up between the members j.

Above the shelf of plates h is a similar shelf lc but the composing plates are disposed nearer to the center of the machine so that when in horizontal position the flanged part Z seats against the closed girder member m and prevents the gases passing up by this member. This disposition of the plates leaves a space at the sides and a flue 'n is thus formed at each side of the machine. Above this shelf in a further shelf 0 is formed of plates as before and these are arranged in the same position as the lower shelf of plates k so that the passage for the gases is left at the center p where they pass up to the chimney d. At one end of the machine the fire door is arranged and one or more openings g for inspection and like purposes are provided. Theopenings g have removable doors or covers 71 and when these are removed the openings form air inlets for admitting air over the shelves to sweep out the moisture driven out of the material treated and facilitate drying. The pivots of the tilting plates compo-sing the shelves may be carried through this end plate and are provided with operating arms which may be coupled up in the manner shown at s Figs. 1 and 3, so that one hand lever may simultaneously operate a complete shelf comprised of several tilting plates.

At the other end of the machine further inspection and air inlet openings z5 may be provided and a large opening u is provided for each of the hot plates f. These openings u are fitted with removable or hinged covers and enable material lying on the plates to be readily scraped out.

In the machine illustrated hinged covers c' are provided with retaining devices such as w for holding up the covers or lids when the machine is being charged.

The machine is provided with a jib or jibs such as m for facilitating handling of the material.

The construction of the composing plates of the shelves is of considerable importance and details are shown at Figs. l to 8 of the constructions that may be followed.

Fig. 4, shows to a larger scale the construction shown at Fig. 3. The plates are each composed of rolled flanged section members such as y bolted or riveted together through the flanges. To form pivots a tag like part z is employed and secured between the flanges of the members leaving a trunnion for working in a bearing in the end plate of the machine. This construction separates the members y slightly so that small spaces are formed up which the hot gases and air may pass direct to the stone or other material to be treated.

When the shelves are arranged from end to end of the machine it is preferable to provide supports to prevent sagging. convenient arrangement is shown in Fig. 5; a transverse bearer l is provided with a sei i ries of bearings S'uehasa anduthefpias lare posed pivots; in this case one wideand one narrowl section member are employed and .are secured and provided with a'pivotmin the manner set forth with referenceyto Fig. 4. `Each plate may be formed in one piece as a rolled member ask at Fig. 7. Thefpivot-s may then be formed by cutting away the bodyvof the end parts and leaving a portion of the web projecting. The projecting part may be formed to form a trunnion as at Fig. 8t

In operation a fire is lighted on the grate and after heating up a little stone or other material to be used for forming the dustless road is shoveled or otherwise charged onto the top shelves 0. Subsequently theplates of these shelves are tilted by the mechanism s and the material is dumped between the plates onto the next shelves la; more material is vthen filled in on the topshelves andthe second shelves are in turn tilted (see Fig. 3) to dump onto the bottomy shelves 7i. -The top shelves are again operated and recharged so that all shelves are kept working. After drying on the shelves in its ypath down the apparatus the material is iinally dumped onto the hot plates f where it encounters a greater heat. During operation the 4openings g and t and maybe 'u also may be uncovered to admit airy for carrying off the moisture from the stonezetc. and assisting the drying operation. j`

The mechanism forxtilting theplate is preferably arranged so that the plates of one i vthe casing, are so disposed with respect tok shelf tilt in one direction and the next move in the opposite direction so that the stone is thrown in various ways and the surfaces of the piecesconstantly changed over so that they are more effectually brought into contact withV the heat. t t

From the final hot plates the material may be scraped into a bucket or buckets such asl 5 which can be readilymanipulated with assistance of a jib or jibs m and the hot and dry stone may be dipped into tar or like inalterial and coated inthe desired manner s ready for use in the road making operations proceeding atthe site where the machine is working. The' tar, etc.,.may be heated (if itis desired` to heat it) in an ordinary tar boiler or a suitable tank might be` carried by the apparatus for this purpose. y,

-It will be seen that thesuccessive beds, fromfthe lowermost to the uppermost within the casing structure that the entire volume of the products ofcombustion is limitedto the path whereby `it is carried across the bottom of each bed, in one direction, fand then upwardly across Vthe, top of each bed kin another direction and in la successive yzigzag course to the outlet. By means of this construction substantially .the full efciency is kobtained from the products of combustion and the successive beds from the lowermost tothe uppermost aresuccessively heated to 4Vtemperatures decreasing with respectto the general direction of ow of the products of combustion. In other words, the lowermost Vbed will be heated to the Vhighest temperature and the next uppermost bedjwill not be heated. to such a high 'temperature and therefore when the tiltable sections are tipped the material can be successively lowered into zones'of gradually increasing temperature until thev material reaches the linal heats ing-bed fr The arch e, which may be of refractoryA material, is provided with lues g for passage 0f the gases and the said arch functions as a protector to prevent 'overheatingy or burning of the material on theV final hotbed j. It will thus be seen that applicant provides a final vhot plate closely adj acentto the grate and which is', to a` great extent, protected from direct contact with the greatest heat radiating from the' lire bed,

whereas above the iinal hot plate f, `they re? ma-ining beds are subjectedv to direct action to the products of conibustionrf'which, at those points, has lost'a certain percentage of heat so that there` would be no danger of material comprising in combination, ar cas-k ing structure, a grate in the lower portion of Y said structure and an loutlet in the upper portion thereof, a plurality of su'perposed beds in said casing structure disposed in the path Vof the products of combustion passing from the grate to said outlet, devices supporting tsaid beds in'Y alternate spacedand y closed lateralrelation with said casing structure at opposite sides ofsuccessive beds thereby limiting the flow of the entire volume of the products of combustion across the bed bottoms in o-ne direction andV over the the beds'and their contents to temperatures gradually increasing inversely with respectto the direction of How of the products of combustion, those bedsV above the lowermost beds having tiltable sections whereby the material Vmay be dumpedfrom bed to bed to vii5 "bed tops in another direction 'and heating f zones'` of gradually increasing/temperature,

substantially as described.' Y

2. apparatus for treating road making material comprising in combination, a, easand the lowest bed, substantially as de- 10 ing structure having a grate in its lower porscribed. s

tion and an outlet in its upper portion, a In testimony whereof I affix my signature plurality of superposed heating beds disin presence of two Witnesses.

posed in the path of the products of combustion flowing from said grate to said outlet, JOHN EINES' the lower bed being in relatively closed rela- Witnesses:

tion with respect to said grate, and a, pro- FRANK ASTON,

teotng shield interposed between said grate E. DAWSON HARDGASTLE.

Copies of th'is patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

